SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('86a05ea06c0209f2e77a5d7382dde8a7','0','3.141.0.61','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715527139','board.php?boardid=648&sid=a3bcfd60328ec338a8dc40d61ae6e4d1','0','0','')
mysql error: Duplicate entry '86a05ea06c0209f2e77a5d7382dde8a7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 17:18
Script: /board.php?boardid=648&sid=a3bcfd60328ec338a8dc40d61ae6e4d1
Referer: